Language Terminology chapter 17
Cochlea
a snail-shape, spirally wound tube in the inner ear
Strabismus
abnormal deviation of the eye caused by muscle weakness
Cataract
clouding of the lens
Iris
colored portion of the eye; surrounds the pupil
Ciliary body
contains muscles that control the shape of the lens and secrete aqueous humor
Retina
contains sensitive cells (rods and cones) that transmit light energy to nervous impulses
Pupil
dark center of the eye through which light rays enter
Presbycusis
deafness due to old age
Conjunctiva
delicate membrane lining the eyelids and covering the anterior eyeball
Tympanic membrane
eardrum
Cornea
fibrous layer of clear tissue that extends over the anterior portion of the eyeball
Suppurative otitis media
inflammation of middle ear with pus formation
Vitreous humor
jelly-like material behind the lens; helps to maintain the shape of the eyeball
Semicircular canals
passages in the inner ear associated with equilibrium
Stapedectomy
removal of the third bone of the middle ear
Tinnitus
ringing sound in the ears
Stapes
small bone in the middle ear
Chalazion
small hard mass on the eyelid
Tympanoplasty
surgical repair of the eardrum
Pinna
the flap, or outside part, of the ear
Sclera
tough, white outer coat of the eyeball
Lens
transparent body behind the iris and in front of the vitreous humor, refracts light rays to bring them into focus on the retina
Eustachian tube
tube connecting the middle ear to the throat
Choroid
vascular layer of the eyeball that is continuous with the iris
Cerumen
waxy substance secreted by the external ear